<template>
  <footer class="footer">
    <span class="todo-count">剩余<strong>{{ list.length }}</strong></span>
    <ul @click="isChange" class="filters">
      <li>
        <a 
        @click="isAll = 'all'"
        :class="{ selected: isAll === 'all'}" 
        href="javascript:;" >全部</a>
      </li>
      <li>
        <a 
        @click="isAll = 'no'"
        :class="{ selected: isAll === 'no'}"
        href="javascript:;">未完成</a>
      </li>
      <li>
        <a 
        @click="isAll = 'yes'"
        :class="{ selected: isAll === 'yes'}"
        href="javascript:;" >已完成</a>
      </li>
    </ul>
    <button @click="clearJob" class="clear-completed" >清除已完成</button>
  </footer>
</template>

<script>
export default {
  props: ['list'],
  data() {
    return {
      isAll: 'all'
    } 
  },
  methods: {
    isChange() {
      this.$emit('changeTask', this.isAll)
    },
    clearJob() {
      this.$emit('clearAll')
    }
  }
}
</script>